strace is a system call tracer, i.e. a debugging tool which prints out a trace
of all the system calls made by a another process/program.
strace is similar to the native BSD ``truss'' utility, but it's output style is
more convenient in most cases.
For strace to work, procfs has to be mounted. FreeBSD does not mount it by
default. For more information, man procfs.
This module uses image libraries, Python Imaging Library (PIL) by
default, to generate QR Codes.
A Quick Response code is a two-dimensional pictographic code used
for its fast readability and comparatively large storage capacity.
The code consists of black modules arranged in a square pattern on
a white background. The information encoded can be made up of any
kind of data (e.g., binary, alphanumeric, or Kanji symbols)
Simplestroke is a simple utility that detects mouse gestures. It
currently detects twelve pre-defined mouse gestures and prints the
name of the detected gesture to stdout, if any. The output can then
e.g. be used in a simple shell script to execute commands.
Example usages could include closing windows in i3 by drawing a Z over
them or other window manipulations, or pausing your music player by
drawing a left-to-right line.
ABACUS is a software system written in C++ that provides a framework for the
implementation of branch-and-bound algorithms using linear programming
relaxations. Cutting planes or columns can be generated dynamically
(branch-and-cut, branch-and-price, branch-and-cut-and-price).
ABACUS allows the software developer to concentrate merely on the problem
specific parts, i.e., the separation of cutting planes, column generation, and
primal heuristics. ABACUS supports the Open Solver Interface (Osi) developed
by the COIN-OR (COmputational INfrastructure for Operations Research) project
which means that every solver supported by OSI can be used to solve the
relaxations.
Moreover, ABACUS provides a variety of general algorithmic concepts, e.g., a
list of different enumeration and branching strategies from which the best
alternative for the user's application can be chosen.
Finally, ABACUS provides many basic data structures and useful tools for the
implementation of such algorithms. It is designed both for general mixed
integer optimization problems and for combinatorial optimization problems. It
unifies cutting plane and column generation within one algorithm framework.
Simple reuse of code and the design of abstract data structures and algorithms
are met by object oriented programming modules.
Partio is a library for reading/writing/processing particle files for a wide
range of tools and file formats. It acts as an abstraction for the
commonalities in particle models (i.e. accessing many attributes associated
with an index or entity).
This module provides a simple but complete cron like scheduler. I.e
this modules can be used for periodically executing Perl subroutines.
The dates and parameters for the subroutines to be called are
specified with a format known as crontab entry (see manpage crontab(5)
or documentation of Schedule::Cron).
The philosophy behind Schedule::Cron is to call subroutines
periodically from within one single Perl program instead of letting
cron trigger several (possibly different) Perl scripts. Everything
under one roof. Furthermore Schedule::Cron provides mechanism to
create crontab entries dynamically, which isn't that easy with cron.
Schedule::Cron knows about all extensions (well, at least all
extensions I'm aware of, i.e those of the so called "Vixie" cron) for
crontab entries like ranges including 'steps', specification of month
and days of the week by name or coexistence of lists and ranges in the
same field. And even a bit more (like lists and ranges with symbolic
names).
Florist was produced by students and faculty of the Florida State University
Department of Computer Science, under contract to the US Department of
Defense, Defense Information Systems Agency, as a product of the POSIX Ada
Real-Time (PART) Project. When the contract was completed, in 1999, FSU turned
maintenance of Florist over to Ada Core Technologies, Inc.). The latest and
most complete free version is available from Adacore.
FLORIST is an implementation of the IEEE Standards 1003.5: 1992,
IEEE STD 1003.5b: 1996, and parts of IEEE STD 1003.5c: 1998, also known as
the POSIX Ada Bindings.
This is the Jargon File, a comprehensive compendium of hacker slang
illuminating many aspects of hackish tradition, folklore, and humor.
Furthermore it is a dictionary converted from the original one into
JIS X 4081 format (that is a subset of EPWING V1) by FreePWING. So it
can be used by EPWING viewer on Unix and the other OS (e.g. Windows or
MacOS). URL for this converted dictionary is
This is a port of hourglass, a synthetic real-time application that
can be used to learn how CPU scheduling in a general-purpose operating
system works at microsecond and millisecond granularities.
- It creates very detailed map of when each Hourglass thread has
access to the CPU
- It supports multiple thread execution models; e.g. periodic and
CPU-bound
- It acts as an abstraction layer for threading, timing, and CPU
scheduling functionality on Unix- and Win32-based systems
WindowLab is a small and simple window manager, based on aewm, of
novel design. WindowLab maintains the illusion of direct manipulation
by constraining the mouse pointer when appropriate, i.e. when a window
cannot be dragged any further in one direction.
It's click-to-focus, shares its window depth policy with the Amiga,
and has a window resizing/reshaping method similar to that of 8 1/2
from Plan 9.